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RichiMcRothschild
RichiMcRothschild
12.10.2022 22:33 •  Математика

Умаличика были палочки.когда он сложил с них 7 отдельных треугольников у него осталось 19 палочек.сколько палочок было у мальчика сначала?

👇
Ответ:

3 умножить на 7 =21 палочка потребовалась для 7 треугольников

21+19=30 палочек было у мальчика сначала

4,6(28 оценок)
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Ответ:
tseng7788
tseng7788
12.10.2022

Пошаговое объяснение:

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4,6(44 оценок)
Ответ:
timon040805
timon040805
12.10.2022
3/4 и 1/6    
Общим знаменателем является 12
3*3/12  и 1*2/12
9/12 и 2/12

5/6 и 7/8
Общим знаменателем является 24
5*4/24 и 7*3/24
20/24 и 21/24

9/10 и 1/4 
Общим знаменателем является 20
9*2/20 и 1*5/20
18/20 и 5/20

2/15 и 1/6
Общим знаменателем является 30
2*2/30 и 1*5/30
4/30 и 5/30

11/12 и 3/8 
Общим знаменателем является 24
11*2/24 и 3*3/24
22/24 и 9/24

1/16 и 5/12 
Общим знаменателем является 48
1*3/48 и 5*4/48
3/48 и 20/48

13/18 и 1/10
Общим знаменателем является 90
13*5/90 и 1*9/90
65/90 и 9/90

5/24 и 15/16 
Общим знаменателем является 48
5*2/48 и 15*3 /48
10/48 и 45/48
4,6(28 оценок)
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